TY - GEN
T1 - Optimization of a bi-spectral boxed side-by-side moderator for the target-moderator-reflector system of the ESS
AU - Reiss, T.
AU - Filges, U.
AU - Talanov, V.
AU - Wohlmuther, M.
AU - Gallmeier, F.
PY - 2013
Y1 - 2013
N2 - Providing bi-spectral neutron beams is one of the main neutronics design criteria for the target-moderator-reflector system (TMR) of the European Spallation Source, to be built in Lund (Sweden). As a first step, the requirements of neutron scattering instruments regarding the neutron spectrum are formulated, a Figure of Merit is defined. In order to maximize the moderator performance to obtain bispectral neutron extraction, a parametrized model of the TMR is developed and used within a MCNPX-based optimization framework. This model is then used to study and optimize the moderator performance, especially in the thermal and cold parts of the spectrum. Results obtained with an optimized moderator setup are dicussed and compared with the requirements of the instruments.
AB - Providing bi-spectral neutron beams is one of the main neutronics design criteria for the target-moderator-reflector system (TMR) of the European Spallation Source, to be built in Lund (Sweden). As a first step, the requirements of neutron scattering instruments regarding the neutron spectrum are formulated, a Figure of Merit is defined. In order to maximize the moderator performance to obtain bispectral neutron extraction, a parametrized model of the TMR is developed and used within a MCNPX-based optimization framework. This model is then used to study and optimize the moderator performance, especially in the thermal and cold parts of the spectrum. Results obtained with an optimized moderator setup are dicussed and compared with the requirements of the instruments.
UR - http://www.scopus.com/inward/record.url?scp=84890751624&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84890751624
SN - 9783954501229
T3 - IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference
SP - 3957
EP - 3959
BT - IPAC 2013
T2 - 4th International Particle Accelerator Conference, IPAC 2013
Y2 - 12 May 2013 through 17 May 2013
ER -